Marine-engine governor.



N0. 707,038 Patented Aug. l2, I902.

' M. F. VDLKMANN.

MARINE ENGINE GOVERNOR.

(Application filed. Dec. 19, 1901;)

4 Sheets-Sheet IL (No Model.)

No. 707,038 Patented Aug. l2, I902.

' M. F. VULKMANN.

MARINE ENGINE GOVERNOR.

(Application filed Dec. 19, 1901.)

(No Model.) 4 Sheets$hei 2.

INVENTOH WITNESSES Wm 6.6% MW 1w: Nonms vztzas 110., woro-umo.WASHINGTON. D c.

' No. 707,033. Patented Aug. |2, I902.

' m. F. VOLKMANN. I

MARINE ENGINE GOVERNOR.

(Application filed Dec. 19, 1901.)

(No Model.) 4 Sheets-Sheet 3.

Z I Z f 0 J a O O M 27 1% a'ff \22 5'0 579 I i o o WITNESSES /N VENTOI?Aka/5M flarizrz E l a lkmahn No. 707,038. Patented Aug. !2, I902.

' M. F. VULKMANN.

MARINE ENGINE GOVERNOR.

, (Appflcation filed Dec. 19, 1901.)

(No Model.) 4 Sheets Sheet 4-.

A TTOHNE Y'S MARTIN FREDERICK VOLKMANN, OF SANTA MONICA, CALIFORNIA.

MARINEWENGINE GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 707,038, dated August12, .1902. Application filed December 19, 1901. Serial No. 86,525. (Nomodel.)

To all 1071,0121, it may concern.-

Be it known that I, MARTIN FREDERICK VOLKMANN, a citizen of the UnitedStates, and a resident of Santa Monica, in the county of Los Angeles andState of California, have invented a new and Improved Marine-EngineGovernor, of which the following is a full, clear, and exactdescription.

This invention relates to improvements in governing devices for marineengines; and the object is to provide a simple mechanism by means ofwhich dangerous racing of the propeller-shaft will be prevented shouldthe shaft break, the wheel become loose, or in case of the wheel risingout of the water by the pitching of the vessel.

I will describe a marine-engine governor embodying my invention and thenpoint out the novel features inthe appended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of a marineengine governor embodying myinvention and showing the same in a vessel. Fig. 2 is a sectional viewon the line ac of Fig. 3, showing a driving-shaft and certain clutchmechanism employed. Fig. 3 is a plan View thereof, part being insect-ion on the line y y in Fig. 2. Fig. 4 is a detail view, partlybroken away and in section, showing the driven shaft. Fig. 5 is asection on the line a z of Figs. 2 and 4, and Fig. 6 is a detail Viewshowing the valve mechanism employed.

Referring to the drawings, 1 designates a marine engine operating thepropeller-shaft Arranged in the vessel is a driving-shaft 3, which isoperated from the propeller-shaft by means of a vertical shaft 4, havinggear connections 5 6 with the propeller-shaft, and

on the upper end of said shaft 4 is a bevel gear 7, meshing with abevel-gear S, loosely mounted on the driving-shaft 3. The hub of thisgear 8 is provided with clutch-teeth designed to be engaged by the teethof a movable clutch member 9, mounted to slide on the shaft 3, but torotate therewith. This clutch-section 9 is yieldingly held against theclutch-section of the gear-wheel 8 by means of a spring 10. It will benoted that the teeth of the clutch-sections are in the form ofratchet-teeth, and therefore at certain times when there is a slightdifference in speed between the propeller-shaft and the driven shaft theclutch members may slide one upon the other. Ordinarily, however, theclutch-sections will be in engagement, so that the shaft 3 will bedriven positively from the propellershaft.

Mounted loosely on the driving-shaft 3 is a sprocket-wheel 11 designedto be engaged at its opposite sides, as will be hereinafter described,by cl utch devices carried by the-driving-shaft. The clutch devices atone side consist of arms 12, provided with shoes for engagingfrictionally on the hub of the sprocket-wheel, and these arms arepivoted in a collar 13, attached to the shaft, and links 14 extend fromthe arms to connection with a collar 15, mounted to slide on the shaft,but to rotate therewith. At the opposite side are the clutch-arms 16,having shoes for en gaging with the hub of the wheel 11, and these armsare pivoted in a collar 17, mounted to rotate with the shaft 3, and thearms have link connections 18 with a collar 19, mounted to slide on theshaft, but designed to rotate therewith.

Arranged below the driving-shaft is a driven shaft consisting of twosections 20 and 21, the section 21 being in the form of a sleevesurrounding the section 20, and this sleevesection carries a bevel-gear22, meshing with a bevel-gear 23, mountedon the spindle of the governor24, which controls the valve 25 for the engine. Under normal conditionsthe two shaft-sections are to be driven together, but underotherconditionsthat is, when the propeller rises out of the water by thepitch of the vessel-it is designed to speed the governor, and thereforethe sleeve-section 21 will have a faster motion than theconstantlydriven section 20. To provide for this, I attach to thesleeve-section 21 a lug 26, pivoted in a recess in the end of the shaft.and held outward yieldingly by means of a spring 27. This lug isdesigned to engage with. a lug or lugs 28, extended laterally from acollar 29 mounted on the shaft-section-20. Obviously when theshaft-section 20 is rotated under normal conditions the lug 28, byengaging with the lug 26, will cause a corresponding movement of thetubular shaft-section 21,

thus operating the governor to hold the steamcontrolling Valve in openposition; but when the tubular shaft-section 21 rotates faster than thesection 20 the lug 26 will yield and pass over the lug or lugs 28 on thecollar 29.

On the shaft-section 21 is a sprocket-wheel 30, from which asprocket-chain 31 extends to the sprocket-wheel 11 on the driving-shaft.The driving-shaft 3 is connected to the shaftsection 21, so as to giveconstant motion to the driven shaft by means of a sprocket chain 32,engaging with a sprocket-wheel 33 on the driving-shaft and asprocket-wheel 34 on the driven shaft. The sprocket wheels 30, 33, and34 are substantially of the same size. The sprocket-wheel 11, however,is considerably larger than the other sprocket-wheels, so as to speedthe motion of the shaft and governor, as before mentioned.

From a cross-head 35 rods 36 extend through suitable bearings and haveat their ends lugs 37, which engage with an annular channel formed inthe collar 19, and from this crosshead 35 a stem 38 projects andconnects with a piston 39, operating in a cylinder 40.

A ring 41 is seated in an annular channel formed in the collar 15, andfrom this ring arms 42 extend to connection with a pendulum 43, mountedto swing on a support-44. This pendulum is provided with an opening,through which the shaft 3 passes. The lower end of this pendulum 43engages loosely against the end of a stem 45, projected from a piston46, operating in a cylinder 47. On the cylinder 47 is a steam-chest 48,in which a slide-valve 49 operates to control the passage of steam tothe opposite sides of the piston 46 and also to control the exhaust fromthe opposite sides thereof. This slide-valve 49 has connection with apendulum 50, which is mounted to swing on the support 44 and is designedto control the movements of the slide-valve. At the lower end thispendulum 50 is designed to engage with the stem 51 of a piston 52,operating in a cylinder 53.

From the cylinder 40 pipes 54 55 lead to opposite ends of a cylinder 56,arranged at the stern of the vessel and in which are slidevalves 57 and58, and'this cylinder 56 receives steam from the boiler through a pipe59 and exhausts through a pipe 60. The valves 57 and 58 are mounted on arod 61, arranged to slide in the cylinder, and the lower end of this rodis connected to the pivoted arm 62 of a float 63, arranged in a trunk64, which has openings at its lower side for the entrance of water.

Leading into a main or controlling cylinder 65 is a steam-pipe 66, andfrom this steampipe 66 a pipe 67 leads to the steam-chest 48. Operatingin the cylinder 65 is a slide-valve 68 forcontrolling the passage ofsteam through having swinging connection with a pendulum 78, and thepawl is held yieldingly in engagement with the rack by means of a spring79, connected at one end, as here shown, to the pendulum and having asliding connection at the other end with the arm. Extended down atopposite sides of the rod 72 and from the pawl 76 are tappets 80, whichare designed at a certain time, as will be hereinafter described, to engage with a block 81, adjustable along a supporting-bar 82. As hereshown, this supporting-bar 82 is provided with a longitudinal slot,through which a bolt from the block 81 passes, and this bolt is engagedby a thumb-nut 83.

In operation when the vessel is running on even keel the governor forcontrolling the valve of the engine will be rotated normally from thepropeller-shaft, as before mentioned. Atthis time, if the propeller issufiiciently immersed, the float 63 will raise the valves 57 and 58, sothat the steam or air pressure (it is to be understood that either steamor air pressure may be used) may enter the pipe 55, and the exhaust fromcylinder 40 will pass through pipe 54 and through cylinder 56 at theexhaust-port 60, thus releasing the clutch controlled by the cylinder40; also, the valve 68 will be in its normal position, so that air orsteam pressure will enter the pipe and.

force the piston 52 to the position shown in Fig. 1, and the exhaustfrom cylinder 53 passes through the pipe 69 and the cylinder 65 at theexhaust 71, and of course the several pendulums will behangingstraightandthe clutch members out of engagement with the wheel11. Should the vessel pitch forward, raising the propeller out of thewater, the several pendulums will swing forward. This movement of thependulum will move the slidevalve 49, so as to permit steam from thepipe 67 to press against the piston 46, forcing the pendulum 43 forward,causing the clutch-arms 12 to engage the sprocket-wheel 11, looking itto the driving-shaft, consequently through the medium of theshaft-section 21 speeding the governor and closing or partly closing theengine-governing valve. Also when the stern rises the pendulum 78 willswing forward and the pawl 76 will pass over one or more of the teeth75. When the stern begins to fall, the pendulum 78 will return to itsnormal position, and as the pawl now engages with a tooth on the rod 72the valve 68 will be drawn rearward, thus reversing the pressure,causing the steam to pass through the pipe 69 to the opposite of piston52, returning the pendulum 50 to normal position and also returning theslide-valve 49 to normal position, permitting the pendulum iOO 43 toswing and loosen its clutch engagement with the sprocket-Wheel. When thetappets S0 engage with the block 81, the pawl '76 will be raised out ofengagement with the tooth on the rod 72, permitting the Weight 73 todraw the valve 68 to normal position.

Should the .water fall away from the propeller-wheel, the water passingout of the trunk 64 will permit the float 63 to drop, opening steamwaythrough the pipe 54:, causing the piston 39 to operate the clutcharms 16in the manner before described to speed the governor. As the water risesin the trunk of course the valve will be moved to normal position, andthe pressure will enter pipe 55, forcing piston 39 backward, thusreleasing the clutch, and the exhaust from cylinder 40 will pass throughthe pipe 54 and through the cylinder 56 at the exhaust-port 60.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In connection with a marine engine and apropeller-shaft driven thereby, a drivingshaft operated from the engine,a governor for the steam-valve of the engine and normally operated fromsaid driving-shaft, and means for speeding the governor upon the rise ofthe propeller in the Water, substantially as specified.

2. A marine-engine governor, comprisinga governor having connection withthe steamcontrolling valve of the engine,a driving-shaft operated fromthe engine, a driven shaft operated from the driving-shaft, the saiddriven shaft consisting of two sections, one mounted to rotate on theother, a gear connection between the governor and said section mountedto rotate on the other section, a sprocket-wheel loosely mounted on thedriving-shaft, a driving connection between said sprocket-wheel and thelast-named member of the driven shaft, clutch devices carried by thedriving-shaft and adapted for engagement with the sprocket-wheel, andmeans for engaging the clutch devices with said sprocket-Wheel,substantially as specified.

3. In a marine-engine governor, a ball-governor having connection withthe inlet-valve,

a propeller-shaft driven by the engine, a driving-shaft, a gearconnection between the propeller-shaft and driving-shaft, a driven shaftconsisting of a main section and a tubular section, means for lockingthe two sections together, a gear connection between the tubular sectionand the governor, a sprocketwheel loosely mounted on the driving-shaftand having driving connection with the sleeve-section, a drivingconnection between the driving-shaft and the main section of the drivenshaft, a clutch device mounted to rotate with the driving-shaft andadapted for engagement with the loose sprocket-wheel thereon, a pendulumfor moving said clutch, and a steam-controlled device for moving thependulum, substantially as specified.

4-. In a marine-engine governor, a governor der,

for the engine, a propeller-shaft driven by the engine, a driving-shaft,a gear connection between the driving-shaft and propeller-shaft, asprocket-wheel loosely mounted on the driving-shaft, a driven shaftconsisting of a main section and a tubular section, a gear connectionbetween the tubular section and the governor, a sprocket-chainconnection between the driving-shaft and the main section of the drivenshaft, a sprocket-wheel loosely mounted on the driving-shaftand havingchain connection with the tubular section of the driven shaft, a clutchdevice mounted on the driving-shaft and adapted for engagement with saidloose sprocket-wheel, a steam-cylinder, a piston in said cylinder havingconnection with the clutch device, asteam-cylinder arranged at the sternof the vessel and having pipe connections with the first-namedcylinder,a rod movable in the last-named cylinvalves on said rod for controllingthe passage of steam through the pipes, a watertrunk supported at thestern of the vessel, and a float in said water-trunk having connectionwith said rod, substantially as specified.

5. In a marine-engine governor, a ball-governor having connection withthe controllingvalve for the engine, a propeller-shaft operated by theengine, a driving-shaft, a gear connection between the propeller-shaftand the driving-shaft, a driven shaft consisting of a main section and atubular section, the said tubular section being geared to the governor,a chain connection between the driving-shaft and the main section of thedriven shaft, a.

sprocket-wheel loosely mounted on the driving-shaft and having drivingconnection with the tubular section of the driven shaft, a clutch membermounted on the driving-shaft and adapted for engagement with said loosesprocket-wheel, a pendulum having connection with said clutch, a mainsteam-cylinder,

a supply-pipe leading therein, a slide-valve in said cylinder, asteam-chest having pipe connection with the supply-pipe, a slidevalveoperating in said chest, a pendulum with which said slide-valveconnects, a cy1- inder receiving steam from the steam-chest, a pistonoperating in said cylinder and adapted for engagement with thefirst-named pendulum, a steam-cylinder having connection with the maincylinder, and a piston in said cylinder having connection with the lastnamed pendulum, substantially as specified.

6. In a marine-engine governor, a ball-governor, a driving-shaftoperated from the en gine, a driven shaft consisting of a main sectionand a tubular section, the said tubular section having gear connectionwith the governor, a driving connection between the driving-shaft andthe main section of the driven shaft, a sprocket-wheel loosely mountedon the driving-shaft and having driving connection with the tubularsection of the driven shaft,a clutch on the driving-shaft adapted forengagement with said last-named sprocketwheel, a pendulum havingconnection with the clutch, a main steam-cylinder, a valve mounted toslide in said steam-cylinder, a rod extended through the heads of thecylinder and to which the valve is connected, a weight at one end ofsaid rod, teeth on the other end of said rod, a pendulum rearward of thefirstnamed pendulum, a pawl mounted to swing on said pendulum andadapted for engagement with the teeth on said rod, means forlifting thepawl out of engagement with a tooth as the pendulum moves to normalposition, and means controlled by said slide-valve for operating thefirst-named pendulum in one direction, substantially as specified.

7. A controlling device for the governor of a marine engine, comprisinga steam-cylinder for receiving steam from the boiler, a slidevalvearranged in the cylinder, a rod connected to the slide-valve andextended through the heads of the cylinder, a weight attached to one endof said rod, teeth on the other end of said rod, a pendulum,aspring-pressed arm mounted to swing on the pendulum, a pawl carried bythe arm for engaging with the teeth, a tappet extended downward from thepawl, and a block adapted forengagementwith said tappet for raising thepawl out of engagement with a tooth, substantially as specified.

8. In connection with a governor fora marine engine, a driving-shaftdriven from the engine, a driven shaft geared to the governor, and meansoperated from the driving-shaft for imparting diflferent rates of motionto the driven shaft, substantially as specified.

9. In connection with a governor for a marine engine, a driving-shaft, asprocket-Wheel loosely mounted on the driving-shaft, a driven shaftgeared to the governor and having connection with said sprocket-wheel,clutch devices on the driving-shaft at opposite sides of thesprocket-wheel, and means operated by the pitching of the vessel, formoving either one of said clutch devices into engagement with thesprocket-Wheel, substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

MARTIN FREDERICK VOLK ill AN N.

IVitnesses:

GEO. H. HUTToN, JOSEPHINE RELYEA.

. p f I

